A new research study is being performed at Imperial College London using brain scanning to investigate the effects of gut hormones on addictive behaviours related to smoking.

We are recruiting volunteers (male or female) between 18 and 60 years old, who are ex-smokers or ex-vapers and have given up smoking cigarettes within the last year (or current smokers or current vapers who plan to quit in the near future).

There is a health screening visit, followed by 3 one day study visits, at the Hammersmith Hospital, London W12. No overnight stays are needed.

You will be paid expenses including travel costs.

For more information and to see if you are eligible please visit our website ghadd.co.uk or email ghadd@imperial.ac.uk.